Includes bibliographical references and index

Achievements and obligations of modern science / O.W. Caldwell -- Gasolene [sic.] as a world power / E.E. Slosson -- The influence of coal-tar on civilization / E.E. Slosson -- Electrons and how we use them / J. Mills -- An investigation on epidemic influenza / P.K. Olitsky and F.L. Gates -- Our present knowledge of tuberculosis / L.R. Williams -- Louis Pasteur and lengthened human life / O.W. Caldwell -- International public health / G.E. Vincent -- Educational value of modern botanical gardens / G.T. Moore -- The meaning of evolution / J.M. Coulter -- Our fight against insects / L.O. Howard -- Insect sociology / V. Kellog -- How the forests feed the clouds / R. Zon -- The modern potato problem / C.O. Appleman --C hemistry and economy of food / H.C. Sherman -- Our daily bread and vitamins / W.H. Eddy

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